PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-21:58:00
G01     93.3           31.1               14.1 +/-    0.71      24.1 +/-    0.71  0.080 / 0.110
G07     122.9          48.3               14.4 +/-    0.84      18.6 +/-    0.84  0.080 / 0.140
G08     42.4           13.7                8.3 +/-    1.06      21.3 +/-    1.06  0.040 / 0.080
G11     74.3           42.0               12.7 +/-    0.66      17.9 +/-    0.66  0.050 / 0.100
G13     298.0          34.7               12.7 +/-    1.86      20.3 +/-    1.86  0.040 / 0.050
G17     213.5          46.9               17.1 +/-    0.77      22.5 +/-    0.77  0.030 / 0.050
G18     67.1           24.5               11.9 +/-    0.47      23.6 +/-    0.47  0.040 / 0.050
G19     213.5          24.2               18.3 +/-    2.13      36.5 +/-    2.13  0.040 / 0.060
G28     344.9          61.8               10.5 +/-    0.62      11.8 +/-    0.62  0.060 / 0.160
G30     99.6           75.5               13.7 +/-    1.18      14.1 +/-    1.18  0.060 / 0.160