PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-18:13:10
G05     47.3           22.7               19.3 +/-    1.81      39.8 +/-    1.81  0.070 / 0.070
G13     79.1           36.2               24.0 +/-    1.27      37.2 +/-    1.27  0.070 / 0.080
G15     135.2          49.5               25.5 +/-    0.80      32.3 +/-    0.80  0.140 / 0.530
G16     316.2          11.6               12.9 +/-   24.19      34.7 +/-   24.19  0.150 / 0.320
G20     245.6          34.7               22.8 +/-    2.36      36.4 +/-    2.36  0.350 / 0.630
G21     311.1          45.5               23.0 +/-    0.95      30.8 +/-    0.95  0.230 / 0.410
G25     198.5          11.8               20.9 +/-    4.80      56.0 +/-    4.80  0.080 / 0.090
G26     290.6          20.4               22.4 +/-    1.25      48.9 +/-    1.25  0.070 / 0.090
G29     152.1          76.0               24.5 +/-    0.41      25.1 +/-    0.41  0.040 / 0.040