PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-16:27:40
G02     201.8          21.9               11.0 +/-    2.28      23.2 +/-    2.28  0.080 / 0.320
G06     168.7          58.5               12.4 +/-    0.76      14.3 +/-    0.76  0.080 / 0.290
G13     226.0          10.6               11.7 +/-    4.33      32.2 +/-    4.33  0.060 / 0.120
G17     29.7           54.5                8.7 +/-    0.90      10.4 +/-    0.90  0.070 / 0.120
G19     343.4          69.7               10.4 +/-    1.00      11.1 +/-    1.00  0.160 / 0.360
G24     308.5          31.1                8.0 +/-    1.24      13.8 +/-    1.24  0.240 / 0.480
G28     92.9           37.1                9.6 +/-    0.80      14.7 +/-    0.80  0.040 / 0.040
G30     158.1          12.6               10.9 +/-    3.73      28.6 +/-    3.73  0.050 / 0.050