PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-21:42:50
G02     19.2           65.7                8.3 +/-    0.41       9.1 +/-    0.41  0.030 / 0.020
G05     153.2          51.3               11.9 +/-    0.67      14.8 +/-    0.67  0.020 / 0.020
G06     48.3           23.8                8.2 +/-    2.27      16.6 +/-    2.27  0.030 / 0.040
G12     219.8          78.3                9.5 +/-    0.92       9.7 +/-    0.92  0.030 / 0.050
G19     89.3           19.0               10.2 +/-    1.56      23.0 +/-    1.56  0.430 / 0.600
G24     215.3          10.6                4.5 +/-   39.54      12.5 +/-   39.54  0.290 / 0.440
G25     310.0          44.4                9.4 +/-    0.80      12.8 +/-    0.80  0.100 / 0.150
G29     298.3          18.5                9.3 +/-    2.92      21.3 +/-    2.92  0.070 / 0.140