PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-15:28:10
G02     220.8          61.7                9.6 +/-    0.72      10.7 +/-    0.72  0.030 / 0.040
G06     49.0           69.7                8.5 +/-    0.38       9.0 +/-    0.38  0.030 / 0.030
G12     319.2          39.6                7.8 +/-    1.25      11.5 +/-    1.25  0.040 / 0.090
G17     58.5           32.4                6.9 +/-    1.15      11.6 +/-    1.15  0.030 / 0.090
G19     45.4           44.9                7.3 +/-    0.78       9.9 +/-    0.78  0.080 / 0.080
G24     260.7          40.0                9.0 +/-    1.03      13.1 +/-    1.03  0.060 / 0.100
G28     123.7          16.3                7.4 +/-    2.49      17.8 +/-    2.49  0.080 / 0.370