PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-23:42:50
G10     299.4          52.6                7.9 +/-    1.88       9.6 +/-    1.88  0.040 / 0.040
G14     210.7          12.1                6.9 +/-   28.22      18.3 +/-   28.22  0.060 / 0.040
G15     46.4           30.6                5.1 +/-    1.09       8.9 +/-    1.09  0.050 / 0.050
G20     292.7          44.4                4.1 +/-    2.50       5.5 +/-    2.50  0.040 / 0.050
G21     98.1           74.4                9.0 +/-    0.68       9.3 +/-    0.68  0.080 / 0.080
G24     94.2           26.7                8.3 +/-    1.10      15.6 +/-    1.10  0.060 / 0.070
G27     299.4          34.6                8.9 +/-    1.31      14.2 +/-    1.31  0.140 / 0.430
G32     210.7          35.1               12.8 +/-    3.03      20.4 +/-    3.03  0.190 / 0.390