PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-21:57:40
G02     199.5          17.7               33.3 +/-    2.76      77.6 +/-    2.76  0.030 / 0.030
G06     171.7          50.0               24.5 +/-    0.95      30.9 +/-    0.95  0.040 / 0.050
G13     230.4          15.7               28.3 +/-    1.48      69.2 +/-    1.48  0.040 / 0.070
G17     9.9            65.6               18.9 +/-    0.60      20.5 +/-    0.60  0.040 / 0.100
G19     305.1          70.9               19.7 +/-    0.55      20.7 +/-    0.55  0.100 / 0.190
G24     312.4          26.7               15.5 +/-    1.99      29.0 +/-    1.99  0.150 / 0.190
G28     83.7           41.7               19.4 +/-    0.79      27.4 +/-    0.79  0.030 / 0.050
G30     156.3          17.4               27.6 +/-    1.69      64.8 +/-    1.69  0.030 / 0.040