PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-16:28:10
G02     216.8          59.0               14.8 +/-    0.65      17.0 +/-    0.65  0.060 / 0.080
G06     56.4           74.1               11.8 +/-    0.77      12.3 +/-    0.77  0.050 / 0.080
G12     319.1          37.2                9.9 +/-    1.19      15.2 +/-    1.19  0.030 / 0.080
G17     60.2           29.4               10.7 +/-    0.92      19.0 +/-    0.92  0.030 / 0.070
G19     43.1           46.9               10.9 +/-    0.55      14.3 +/-    0.55  0.070 / 0.100
G24     266.5          41.2               12.3 +/-    2.24      17.6 +/-    2.24  0.050 / 0.090
G28     123.8          12.3               12.6 +/-    1.55      33.5 +/-    1.55  0.040 / 0.050