PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-16:42:50
G01     70.4           32.9               10.3 +/-    1.33      17.0 +/-    1.33  0.090 / 0.230
G07     137.6          30.9               13.3 +/-    0.85      22.9 +/-    0.85  0.080 / 0.300
G11     53.4           30.4               10.5 +/-    1.64      18.3 +/-    1.64  0.030 / 0.030
G13     273.9          37.6               11.4 +/-    2.26      17.2 +/-    2.26  0.030 / 0.040
G15     303.9          14.4                8.2 +/-    2.52      20.6 +/-    2.52  0.070 / 0.070
G17     233.6          68.3               13.5 +/-    0.37      14.4 +/-    0.37  0.080 / 0.090
G18     48.7           18.0               11.0 +/-    2.70      25.4 +/-    2.70  0.040 / 0.030
G19     224.3          39.8               13.7 +/-    1.28      20.0 +/-    1.28  0.040 / 0.040
G28     20.1           59.2               13.2 +/-    1.28      15.1 +/-    1.28  0.110 / 0.130
G30     135.9          61.9               13.4 +/-    0.48      15.0 +/-    0.48  0.110 / 0.090