PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-12:43:10
G01     41.3           16.7                5.6 +/-    3.00      13.3 +/-    3.00  0.070 / 0.100
G06     173.8          39.7                6.6 +/-    0.79       9.7 +/-    0.79  0.130 / 0.080
G13     237.7          22.4                6.8 +/-    1.59      14.1 +/-    1.59  0.140 / 0.160
G15     276.9          11.5                4.8 +/-    2.29      13.0 +/-    2.29  0.180 / 0.210
G17     4.4            69.9                5.3 +/-    0.39       5.6 +/-    0.39  0.090 / 0.170
G19     267.6          64.8                6.9 +/-    0.78       7.6 +/-    0.78  0.070 / 0.190
G24     315.8          21.1                3.1 +/-    3.55       6.6 +/-    3.55  0.040 / 0.060
G28     70.2           47.7                5.0 +/-    1.31       6.5 +/-    1.31  0.050 / 0.060
G30     155.0          29.4                6.9 +/-    0.75      12.2 +/-    0.75  0.390 / 0.310