PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-21:42:30
G02     200.1          21.7               26.2 +/-    3.17      55.3 +/-    3.17  0.040 / 0.080
G06     169.8          54.9               19.6 +/-    0.88      23.4 +/-    0.88  0.040 / 0.080
G13     227.2          12.8               25.1 +/-    6.61      65.8 +/-    6.61  0.110 / 0.130
G17     16.9           62.1               14.1 +/-    0.60      15.8 +/-    0.60  0.080 / 0.120
G19     319.4          70.7               14.4 +/-    0.64      15.2 +/-    0.64  0.090 / 0.180
G24     309.7          30.0               11.9 +/-    2.52      20.8 +/-    2.52  0.120 / 0.120
G28     88.6           39.3               15.6 +/-    0.63      23.0 +/-    0.63  0.070 / 0.060
G30     156.9          13.5               23.6 +/-    2.33      60.8 +/-    2.33  0.040 / 0.050