PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-21:57:50
G02     200.0          21.2               13.9 +/-    1.86      29.7 +/-    1.86  0.080 / 0.110
G06     170.2          54.2               12.7 +/-    0.67      15.3 +/-    0.67  0.100 / 0.120
G13     227.6          13.3               15.3 +/-    2.76      39.7 +/-    2.76  0.040 / 0.050
G17     15.7           62.8               11.2 +/-    0.75      12.5 +/-    0.75  0.030 / 0.040
G19     317.6          70.8               10.6 +/-    0.40      11.2 +/-    0.40  0.050 / 0.040
G24     310.2          29.5               10.3 +/-    1.86      18.3 +/-    1.86  0.040 / 0.040
G28     87.9           39.6               11.1 +/-    0.89      16.2 +/-    0.89  0.050 / 0.080
G30     156.8          13.9               11.9 +/-    1.52      30.3 +/-    1.52  0.050 / 0.070