PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-07:43:00
G08     319.1          12.0                2.2 +/-    2.73       5.9 +/-    2.73  0.110 / 0.390
G10     314.6          56.6                2.4 +/-    0.68       2.9 +/-    0.68  0.230 / 0.480
G14     214.4          18.1                4.6 +/-    1.81      10.5 +/-    1.81  0.050 / 0.030
G15     45.6           18.2                1.0 +/-    1.09       2.2 +/-    1.09  0.060 / 0.040
G20     59.6           44.6                2.2 +/-    0.95       3.0 +/-    0.95  0.040 / 0.070
G21     122.2          65.9                3.6 +/-    0.56       3.9 +/-    0.56  0.040 / 0.080
G24     84.9           29.5                4.0 +/-    0.56       7.0 +/-    0.56  0.050 / 0.030
G27     286.6          37.6                3.9 +/-    1.63       6.0 +/-    1.63  0.040 / 0.020
G32     216.1          44.7                4.7 +/-    0.85       6.4 +/-    0.85  0.060 / 0.040