PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-13:43:00
G01     124.0          14.1               10.8 +/-    3.54      27.4 +/-    3.54  0.040 / 0.030
G07     64.2           68.8                9.5 +/-    0.85      10.1 +/-    0.85  0.040 / 0.030
G08     47.7           36.1                8.3 +/-    0.89      12.9 +/-    0.89  0.160 / 0.330
G09     176.6          30.6                9.6 +/-    1.76      16.6 +/-    1.76  0.210 / 0.280
G11     113.4          37.4               10.4 +/-    0.83      15.8 +/-    0.83  0.050 / 0.100
G13     320.0          14.9                5.7 +/-    2.99      14.2 +/-    2.99  0.050 / 0.110
G17     200.5          18.5                9.3 +/-    2.00      21.2 +/-    2.00  0.030 / 0.040
G18     99.9           18.4               10.4 +/-    1.27      23.7 +/-    1.27  0.020 / 0.040
G28     282.3          54.8               10.3 +/-    0.96      12.3 +/-    0.96  0.050 / 0.060
G30     336.5          63.1                9.5 +/-    0.85      10.5 +/-    0.85  0.040 / 0.060