PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-00:28:00
G01     94.0           30.9                9.4 +/-    1.48      16.1 +/-    1.48  0.030 / 0.040
G07     122.2          48.7               11.3 +/-    0.44      14.5 +/-    0.44  0.030 / 0.050
G08     42.2           12.5                4.9 +/-    3.26      12.9 +/-    3.26  0.080 / 0.090
G11     76.1           42.6                7.7 +/-    0.85      10.7 +/-    0.85  0.100 / 0.110
G13     298.9          34.3                6.8 +/-    1.96      10.9 +/-    1.96  0.350 / 0.300
G17     212.8          48.3               10.4 +/-    0.59      13.4 +/-    0.59  0.130 / 0.170
G19     213.2          24.3               11.0 +/-    2.66      21.9 +/-    2.66  0.040 / 0.040
G28     344.0          61.8                7.6 +/-    0.69       8.5 +/-    0.69  0.050 / 0.050
G30     100.6          74.3               11.0 +/-    0.68      11.4 +/-    0.68  0.040 / 0.060