PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/31-14:28:00
G01     42.0           17.3                6.1 +/-    0.91      14.3 +/-    0.91  0.050 / 0.100
G06     175.7          37.2               10.7 +/-    1.42      16.3 +/-    1.42  0.060 / 0.090
G13     241.2          23.2                6.5 +/-    1.01      13.3 +/-    1.01  0.200 / 0.360
G15     274.4          12.9                7.4 +/-    1.03      19.3 +/-    1.03  0.160 / 0.300
G17     5.3            70.0                9.0 +/-    0.70       9.6 +/-    0.70  0.100 / 0.210
G19     277.5          70.0                8.4 +/-    0.39       8.9 +/-    0.39  0.100 / 0.260
G24     317.7          16.4                6.7 +/-    2.59      16.2 +/-    2.59  0.120 / 0.290
G28     70.0           47.3                7.1 +/-    0.52       9.2 +/-    0.52  0.100 / 0.320
G30     154.4          30.8                9.0 +/-    0.74      15.6 +/-    0.74  0.030 / 0.040