PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-00:28:00
G01     100.4          28.7                7.6 +/-    0.99      13.7 +/-    0.99  0.040 / 0.050
G07     115.7          53.4                7.9 +/-    0.40       9.6 +/-    0.40  0.040 / 0.050
G08     41.9           17.1                5.8 +/-    1.12      13.7 +/-    1.12  0.040 / 0.070
G11     83.7           43.5                7.4 +/-    0.83      10.2 +/-    0.83  0.060 / 0.060
G13     304.7          31.7                7.0 +/-    1.18      11.8 +/-    1.18  0.080 / 0.110
G17     209.4          42.8               10.5 +/-    1.88      14.6 +/-    1.88  0.090 / 0.130
G19     211.1          19.1                6.8 +/-    2.71      15.3 +/-    2.71  0.020 / 0.050
G28     332.5          61.8                7.4 +/-    0.57       8.3 +/-    0.57  0.030 / 0.050
G30     78.6           77.2                7.9 +/-    0.61       8.1 +/-    0.61  0.030 / 0.060