PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-06:27:40
G01     293.1          39.6                2.7 +/-    1.64       4.0 +/-    1.64  0.050 / 0.040
G03     310.8          13.3                3.8 +/-    2.44       9.9 +/-    2.44  0.050 / 0.030
G10     117.8          31.5                4.5 +/-    0.31       7.6 +/-    0.31  0.050 / 0.030
G11     264.5          27.9                4.5 +/-    1.33       8.3 +/-    1.33  0.050 / 0.050
G14     23.8           58.9                2.0 +/-    0.78       2.3 +/-    0.78  0.050 / 0.060
G22     313.5          37.6                2.8 +/-    1.00       4.2 +/-    1.00  0.040 / 0.060
G25     64.5           17.3                3.3 +/-    0.88       7.9 +/-    0.88  0.040 / 0.080
G26     158.7          11.0               -5.1 +/-   32.89     -14.0 +/-   32.89  0.070 / 0.070
G31     139.3          77.7                5.0 +/-    1.11       5.1 +/-    1.11  0.090 / 0.170
G32     48.3           44.1                1.8 +/-    0.41       2.5 +/-    0.41  0.070 / 0.170