PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-21:43:00
G01     40.0           14.5               13.6 +/-    1.58      34.3 +/-    1.58  0.130 / 0.180
G02     199.2          11.3               25.6 +/-   42.16      69.5 +/-   42.16  0.080 / 0.190
G06     173.8          42.6               27.9 +/-    1.37      39.0 +/-    1.37  0.030 / 0.040
G13     235.7          20.3               29.8 +/-    1.06      65.1 +/-    1.06  0.040 / 0.040
G15     268.8          11.3               25.0 +/-    2.59      67.6 +/-    2.59  0.090 / 0.490
G17     356.8          70.6               21.0 +/-    0.66      22.1 +/-    0.66  0.180 / 0.390
G19     282.8          69.3               21.3 +/-    0.88      22.6 +/-    0.88  0.050 / 0.070
G24     315.6          21.5               16.3 +/-    3.02      34.5 +/-    3.02  0.050 / 0.080
G28     75.4           45.3               20.1 +/-    0.51      27.0 +/-    0.51  0.100 / 0.240
G30     154.9          23.9               27.4 +/-    2.54      55.0 +/-    2.54  0.090 / 0.180