PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-17:42:50
G02     213.0          52.3               16.6 +/-    0.80      20.4 +/-    0.80  0.040 / 0.080
G06     73.1           77.7               13.9 +/-    0.85      14.2 +/-    0.85  0.090 / 0.090
G12     317.6          32.9               14.1 +/-    2.31      23.2 +/-    2.31  0.060 / 0.070
G17     55.8           32.8               10.5 +/-    0.47      17.3 +/-    0.47  0.050 / 0.080
G19     37.1           50.4               11.4 +/-    0.44      14.3 +/-    0.44  0.040 / 0.100
G24     273.9          42.0               13.8 +/-    0.89      19.5 +/-    0.89  0.040 / 0.080
G28     120.1          16.5               10.3 +/-    1.69      24.8 +/-    1.69  0.020 / 0.030