PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-20:27:50
G01     116.9          18.9               14.0 +/-    2.03      31.6 +/-    2.03  0.040 / 0.040
G07     92.8           60.7               12.5 +/-    0.79      14.1 +/-    0.79  0.040 / 0.040
G08     43.8           28.4                8.7 +/-    2.00      15.8 +/-    2.00  0.070 / 0.090
G09     177.2          25.0               14.6 +/-    1.54      28.5 +/-    1.54  0.050 / 0.070
G11     102.1          41.1               13.2 +/-    0.88      18.9 +/-    0.88  0.090 / 0.160
G13     316.4          21.7                9.1 +/-    2.17      19.1 +/-    2.17  0.110 / 0.120
G17     201.2          27.8               14.7 +/-    1.36      27.0 +/-    1.36  0.110 / 0.210
G18     89.2           21.3               12.4 +/-    1.93      26.5 +/-    1.93  0.080 / 0.170
G28     290.2          55.7               11.0 +/-    2.06      13.1 +/-    2.06  0.040 / 0.030
G30     352.3          71.0               10.4 +/-    0.34      10.9 +/-    0.34  0.040 / 0.030