PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-09:42:20
G10     300.1          53.1                4.1 +/-    1.78       4.9 +/-    1.78  0.040 / 0.030
G14     210.1          13.6                2.6 +/-    2.14       6.7 +/-    2.14  0.030 / 0.030
G15     45.8           26.1                2.7 +/-    2.63       5.1 +/-    2.63  0.070 / 0.050
G20     356.1          65.2                3.7 +/-    0.61       4.0 +/-    0.61  0.070 / 0.030
G21     105.0          70.1                6.1 +/-    0.40       6.5 +/-    0.40  0.070 / 0.120
G24     94.3           26.7                4.6 +/-    1.59       8.6 +/-    1.59  0.090 / 0.090
G27     301.2          33.5                2.4 +/-    2.65       4.0 +/-    2.65  0.110 / 0.140
G32     211.7          29.0                6.7 +/-    1.61      12.0 +/-    1.61  0.110 / 0.200