PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-09:57:50
G08     314.9          14.8                2.8 +/-    2.10       7.0 +/-    2.10  0.230 / 0.260
G10     327.5          59.2                4.5 +/-    0.63       5.2 +/-    0.63  0.130 / 0.220
G14     217.4          25.9                7.5 +/-    2.57      14.3 +/-    2.57  0.040 / 0.060
G15     46.5           11.5                2.4 +/-    1.79       6.4 +/-    1.79  0.060 / 0.060
G20     76.4           25.5                3.4 +/-    1.90       6.5 +/-    1.90  0.300 / 0.310
G21     132.1          58.5                6.5 +/-    0.42       7.4 +/-    0.42  0.080 / 0.070
G24     76.6           30.2                4.5 +/-    0.84       7.8 +/-    0.84  0.030 / 0.040
G27     276.7          37.7                6.5 +/-    1.02       9.8 +/-    1.02  0.040 / 0.040
G32     221.6          51.8                7.9 +/-    1.69       9.8 +/-    1.69  0.100 / 0.130