PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/04-19:57:50
G02     206.9          44.8               17.5 +/-    1.32      23.6 +/-    1.32  0.050 / 0.080
G06     137.0          77.5               14.5 +/-    0.66      14.8 +/-    0.66  0.090 / 0.090
G12     311.4          21.0               13.0 +/-    4.40      28.0 +/-    4.40  0.200 / 0.260
G17     43.9           42.8               11.7 +/-    0.61      16.3 +/-    0.61  0.080 / 0.220
G19     20.5           58.5               12.8 +/-    0.42      14.7 +/-    0.42  0.080 / 0.130
G24     285.3          41.6               13.6 +/-    0.94      19.3 +/-    0.94  0.070 / 0.170
G28     109.2          29.0               13.7 +/-    1.57      24.4 +/-    1.57  0.050 / 0.090