PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-11:57:50
G01     44.9           20.8              -22.4 +/-   23.46     -48.3 +/-   23.46  0.250 / 0.330
G06     177.6          31.0                7.7 +/-    2.23      13.2 +/-    2.23  0.240 / 0.250
G13     245.6          26.3                7.3 +/-    1.20      13.9 +/-    1.20  0.030 / 0.060
G15     277.8          14.4                4.7 +/-    1.46      12.0 +/-    1.46  0.040 / 0.070
G17     353.4          74.1                5.6 +/-    0.73       5.8 +/-    0.73  0.090 / 0.200
G19     263.3          67.1                5.3 +/-    0.77       5.7 +/-    0.77  0.100 / 0.250
G24     318.8          12.4                2.1 +/-    2.87       5.7 +/-    2.87  0.030 / 0.030
G28     63.4           49.5                4.3 +/-    0.97       5.5 +/-    0.97  0.030 / 0.030
G30     152.6          35.0                5.9 +/-    0.63       9.3 +/-    0.63  0.070 / 0.130