PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-21:28:00
G10     250.7          27.0               13.1 +/-    1.64      24.5 +/-    1.64  0.030 / 0.050
G13     53.2           29.6                8.4 +/-    1.22      14.8 +/-    1.22  0.030 / 0.060
G15     93.2           59.6               10.3 +/-    0.69      11.8 +/-    0.69  0.150 / 0.540
G16     293.6          16.1                7.5 +/-    3.93      18.0 +/-    3.93  0.140 / 0.610
G20     252.1          12.3                4.8 +/-    1.33      12.7 +/-    1.33  0.050 / 0.160
G21     332.3          59.5                9.5 +/-    0.54      10.9 +/-    0.54  0.060 / 0.170
G26     266.0          15.7               12.5 +/-    2.35      30.6 +/-    2.35  0.040 / 0.040
G29     165.3          51.1               11.2 +/-    1.00      13.9 +/-    1.00  0.030 / 0.030