PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-07:57:40
G01     80.2           33.1                3.3 +/-    1.26       5.4 +/-    1.26  0.040 / 0.030
G07     132.3          37.1                7.4 +/-    0.75      11.3 +/-    0.75  0.030 / 0.040
G11     60.1           35.0                4.7 +/-    0.78       7.5 +/-    0.78  0.060 / 0.050
G13     286.4          36.8                4.9 +/-    1.30       7.5 +/-    1.30  0.050 / 0.070
G15     309.2          13.4                1.4 +/-    2.39       3.7 +/-    2.39  0.040 / 0.040
G17     222.4          63.6                7.7 +/-    1.25       8.5 +/-    1.25  0.040 / 0.040
G19     218.9          36.2                7.2 +/-    1.99      11.1 +/-    1.99  0.080 / 0.190
G28     6.5            60.6                4.3 +/-    1.07       4.9 +/-    1.07  0.110 / 0.180
G30     123.9          68.9                6.7 +/-    0.71       7.1 +/-    0.71  0.070 / 0.090