PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-19:43:10
G01     79.1           33.3               14.8 +/-    1.01      24.3 +/-    1.01  0.160 / 0.210
G07     133.1          37.7               19.5 +/-    0.67      29.5 +/-    0.67  0.100 / 0.180
G11     60.0           35.9               14.9 +/-    0.76      23.2 +/-    0.76  0.030 / 0.030
G13     283.5          37.6               18.1 +/-    0.68      27.4 +/-    0.68  0.030 / 0.030
G15     308.7          13.3               13.0 +/-    2.99      33.7 +/-    2.99  0.040 / 0.060
G17     223.3          59.1               19.5 +/-    1.94      22.3 +/-    1.94  0.030 / 0.070
G18     55.2           21.5               12.1 +/-    4.30      25.7 +/-    4.30  0.310 / 0.200
G19     219.6          34.3               23.2 +/-    1.82      37.2 +/-    1.82  0.360 / 0.180
G28     7.6            60.6               16.4 +/-    1.83      18.5 +/-    1.83  0.060 / 0.110
G30     126.7          67.3               19.3 +/-    0.65      20.8 +/-    0.65  0.060 / 0.110