PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-07:43:00
G01     244.9          32.1                6.0 +/-    0.76      10.0 +/-    0.76  0.070 / 0.230
G03     314.6          46.5                2.3 +/-    1.33       3.1 +/-    1.33  0.080 / 0.300
G11     230.4          10.0                5.7 +/-    2.19      16.0 +/-    2.19  0.040 / 0.040
G14     67.1           36.0                2.5 +/-    0.72       3.9 +/-    0.72  0.040 / 0.040
G16     161.3          22.9                4.6 +/-    1.93       9.4 +/-    1.93  0.070 / 0.110
G22     294.7          71.7                4.6 +/-    1.44       4.8 +/-    1.44  0.060 / 0.130
G23     290.0          21.5                4.3 +/-    2.43       9.1 +/-    2.43  0.090 / 0.100
G26     132.6          41.9                5.8 +/-    1.40       8.2 +/-    1.40  0.110 / 0.110
G31     40.0           53.2                1.7 +/-    0.54       2.1 +/-    0.54  0.080 / 0.220
G32     81.5           20.3                2.8 +/-    0.94       6.2 +/-    0.94  0.080 / 0.250