PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-01:58:00
G01     45.8           21.9                3.9 +/-    1.93       8.2 +/-    1.93  0.040 / 0.050
G06     177.9          29.6                5.3 +/-    1.95       9.3 +/-    1.95  0.040 / 0.040
G11     44.3           12.9                2.9 +/-    2.09       7.6 +/-    2.09  0.210 / 0.160
G13     245.5          27.0                5.6 +/-    2.01      10.5 +/-    2.01  0.120 / 0.220
G15     277.4          14.8                2.3 +/-    1.98       5.8 +/-    1.98  0.080 / 0.120
G17     331.2          76.4                4.6 +/-    0.30       4.7 +/-    0.30  0.070 / 0.100
G19     258.1          64.6                5.1 +/-    0.60       5.6 +/-    0.60  0.030 / 0.020
G24     318.7          12.2                3.6 +/-    4.65       9.5 +/-    4.65  0.020 / 0.030
G28     61.7           50.1                5.2 +/-    0.57       6.5 +/-    0.57  0.250 / 0.290
G30     151.0          31.8                5.9 +/-    0.51      10.0 +/-    0.51  0.380 / 0.250