PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-03:57:50
G01     315.5          24.5                8.7 +/-    2.30      17.2 +/-    2.30  0.030 / 0.020
G10     90.5           49.5                9.8 +/-    0.50      12.5 +/-    0.50  0.030 / 0.060
G11     293.6          27.9                7.9 +/-    0.97      14.5 +/-    0.97  0.140 / 0.230
G14     328.3          71.1                8.4 +/-    1.25       8.9 +/-    1.25  0.160 / 0.240
G18     107.8          24.6                6.6 +/-    2.07      13.0 +/-    2.07  0.100 / 0.130
G22     304.3          16.4                6.5 +/-    3.39      15.5 +/-    3.39  0.130 / 0.170
G25     90.0           11.8                8.5 +/-    2.05      22.9 +/-    2.05  0.040 / 0.040
G31     174.7          50.2               10.5 +/-    0.61      13.2 +/-    0.61  0.030 / 0.040
G32     17.7           62.8                8.8 +/-    0.68       9.7 +/-    0.68  0.040 / 0.040