PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-13:42:40
G01     124.0          14.1               10.5 +/-    2.01      26.8 +/-    2.01  0.030 / 0.040
G07     64.2           68.8                9.2 +/-    0.66       9.8 +/-    0.66  0.030 / 0.030
G08     47.7           36.1                8.2 +/-    1.50      12.7 +/-    1.50  0.030 / 0.030
G09     176.6          30.6                9.7 +/-    1.39      16.8 +/-    1.39  0.030 / 0.030
G11     113.4          37.4               10.2 +/-    0.46      15.6 +/-    0.46  0.150 / 0.340
G13     320.0          14.9                5.9 +/-    2.59      14.7 +/-    2.59  0.150 / 0.400
G17     200.5          18.5                7.6 +/-    1.44      17.4 +/-    1.44  0.130 / 0.180
G18     99.9           18.4                9.8 +/-    1.48      22.4 +/-    1.48  0.100 / 0.200
G28     282.3          54.8                7.6 +/-    2.76       9.0 +/-    2.76  0.160 / 0.260
G30     336.5          63.1                9.4 +/-    0.38      10.4 +/-    0.38  0.130 / 0.220