PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-15:58:00
G01     77.3           33.3                9.1 +/-    1.33      15.0 +/-    1.33  0.040 / 0.050
G07     134.0          36.1               10.9 +/-    0.47      17.0 +/-    0.47  0.060 / 0.040
G11     57.7           34.1                8.6 +/-    1.87      13.9 +/-    1.87  0.030 / 0.030
G13     281.3          37.9                9.1 +/-    1.18      13.7 +/-    1.18  0.030 / 0.030
G15     308.9          12.7                8.1 +/-    2.34      21.4 +/-    2.34  0.050 / 0.050
G17     225.0          63.4               13.0 +/-    1.03      14.4 +/-    1.03  0.050 / 0.060
G18     53.4           20.5                9.3 +/-    7.00      20.2 +/-    7.00  0.080 / 0.110
G19     220.5          34.4               13.0 +/-    1.83      20.9 +/-    1.83  0.080 / 0.130
G28     9.6            60.4               12.1 +/-    1.71      13.7 +/-    1.71  0.040 / 0.080
G30     128.6          67.6               12.5 +/-    0.53      13.4 +/-    0.53  0.080 / 0.060