PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/07-17:42:50
G01     53.4           27.4                9.3 +/-    0.69      17.3 +/-    0.69  0.060 / 0.350
G06     178.9          19.6               15.3 +/-    1.59      33.9 +/-    1.59  0.060 / 0.320
G07     143.8          12.0               11.1 +/-    2.30      29.8 +/-    2.30  0.030 / 0.060
G11     45.5           18.6                9.0 +/-    2.07      20.6 +/-    2.07  0.040 / 0.060
G13     254.2          33.4               11.7 +/-    1.95      19.1 +/-    1.95  0.080 / 0.230
G15     287.3          16.4                9.4 +/-    1.93      22.7 +/-    1.93  0.090 / 0.200
G17     282.5          78.5               12.8 +/-    0.36      13.0 +/-    0.36  0.050 / 0.100
G19     239.4          57.1               13.6 +/-    1.01      15.9 +/-    1.01  0.070 / 0.130
G28     37.2           57.5               11.5 +/-    0.57      13.3 +/-    0.57  0.110 / 0.310
G30     146.7          42.5               14.2 +/-    1.02      19.9 +/-    1.02  0.110 / 0.260