PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-07:27:50
G01     261.3          39.2                5.6 +/-    0.95       8.3 +/-    0.95  0.080 / 0.230
G03     316.3          33.3                2.5 +/-    2.17       4.1 +/-    2.17  0.060 / 0.260
G10     133.4          12.5                3.9 +/-    3.33      10.4 +/-    3.33  0.040 / 0.030
G11     241.6          17.7                6.2 +/-    2.26      14.4 +/-    2.26  0.040 / 0.050
G14     52.7           44.6                2.3 +/-    0.37       3.1 +/-    0.37  0.080 / 0.080
G22     312.0          59.3                4.8 +/-    0.67       5.5 +/-    0.67  0.060 / 0.100
G25     43.0           11.7                2.3 +/-    1.23       6.1 +/-    1.23  0.130 / 0.230
G26     144.4          30.1                5.7 +/-    1.38      10.0 +/-    1.38  0.150 / 0.310
G31     45.0           67.4                4.4 +/-    0.80       4.7 +/-    0.80  0.060 / 0.090
G32     69.6           28.9                2.3 +/-    1.02       4.0 +/-    1.02  0.040 / 0.080