PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-16:27:30
G01     46.0           21.8                7.5 +/-    0.67      15.8 +/-    0.67  0.030 / 0.030
G06     176.5          30.8               -7.1 +/-   19.18     -12.3 +/-   19.18  0.030 / 0.030
G13     247.2          27.3               13.7 +/-    3.20      25.5 +/-    3.20  0.060 / 0.110
G15     282.1          14.3               17.3 +/-   12.67      43.8 +/-   12.67  0.070 / 0.100
G17     349.4          75.3               10.2 +/-    0.64      10.6 +/-    0.64  0.060 / 0.170
G19     259.4          66.2              -70.7 +/-   51.19     -76.5 +/-   51.19  0.060 / 0.150
G24     319.1          10.9              -12.9 +/-   31.54     -35.2 +/-   31.54  0.200 / 0.380
G28     60.5           50.6                0.8 +/-    6.42       1.0 +/-    6.42  0.220 / 0.410
G30     152.2          38.2               11.1 +/-    0.70      16.7 +/-    0.70  0.110 / 0.200