PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-13:28:00
G01     125.0          13.3                8.8 +/-    2.03      22.8 +/-    2.03  0.030 / 0.030
G07     60.6           69.1                8.9 +/-    0.68       9.4 +/-    0.68  0.030 / 0.030
G08     48.4           36.9                6.7 +/-    1.20      10.2 +/-    1.20  0.030 / 0.030
G09     176.6          31.8                7.9 +/-    1.86      13.4 +/-    1.86  0.030 / 0.030
G11     114.7          36.7                9.1 +/-    1.00      14.0 +/-    1.00  0.100 / 0.200
G13     320.3          13.9                5.3 +/-    2.92      13.5 +/-    2.92  0.100 / 0.200
G17     200.3          17.4                6.0 +/-    2.52      14.0 +/-    2.52  0.100 / 0.360
G18     101.0          17.8                8.4 +/-    1.25      19.4 +/-    1.25  0.100 / 0.350
G28     280.3          54.2                7.9 +/-    2.97       9.5 +/-    2.97  0.220 / 0.270
G30     334.9          62.0                8.3 +/-    0.49       9.2 +/-    0.49  0.130 / 0.230