PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-15:27:50
G01     42.3           17.7                9.8 +/-    1.69      22.7 +/-    1.69  0.110 / 0.210
G06     175.5          36.8               13.9 +/-    2.01      21.3 +/-    2.01  0.090 / 0.190
G13     241.6          23.6               11.8 +/-    1.72      23.7 +/-    1.72  0.080 / 0.110
G15     275.5          13.0                8.3 +/-    2.00      21.6 +/-    2.00  0.070 / 0.100
G17     4.3            70.5               11.3 +/-    0.41      11.9 +/-    0.41  0.200 / 0.350
G19     275.7          69.8               11.8 +/-    0.95      12.5 +/-    0.95  0.390 / 0.320
G24     317.9          15.9                6.4 +/-    3.48      15.5 +/-    3.48  0.070 / 0.220
G28     69.1           47.7               11.1 +/-    1.07      14.4 +/-    1.07  0.080 / 0.210
G30     154.3          31.7               10.2 +/-    1.55      17.2 +/-    1.55  0.020 / 0.020