PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-13:28:10
G01     105.8          25.9                6.6 +/-    1.45      12.6 +/-    1.45  0.170 / 0.390
G07     109.8          54.4                6.4 +/-    0.57       7.7 +/-    0.57  0.170 / 0.350
G08     41.7           17.7                5.7 +/-    1.30      13.4 +/-    1.30  0.030 / 0.040
G09     173.1          10.9                5.4 +/-    5.94      14.8 +/-    5.94  0.030 / 0.040
G11     85.0           40.7                6.6 +/-    1.58       9.4 +/-    1.58  0.080 / 0.200
G13     310.3          27.5                3.3 +/-    2.26       6.0 +/-    2.26  0.060 / 0.170
G17     205.6          41.4                7.1 +/-    0.80      10.1 +/-    0.80  0.040 / 0.020
G19     209.0          15.4                6.6 +/-    4.71      16.3 +/-    4.71  0.030 / 0.020
G28     320.2          61.0                4.1 +/-    0.83       4.6 +/-    0.83  0.050 / 0.060
G30     17.1           77.5                4.6 +/-    0.64       4.7 +/-    0.64  0.040 / 0.070