PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-12:27:40
G10     293.2          50.1                3.6 +/-    3.59       4.5 +/-    3.59  0.080 / 0.080
G15     46.3           29.0                3.6 +/-    0.95       6.4 +/-    0.95  0.050 / 0.080
G20     67.4           24.6                5.1 +/-    1.21      10.1 +/-    1.21  0.040 / 0.040
G21     92.8           73.6                4.3 +/-    1.00       4.5 +/-    1.00  0.040 / 0.030
G24     101.1          25.5                7.0 +/-    2.62      13.5 +/-    2.62  0.080 / 0.150
G27     302.1          33.7                3.7 +/-    3.25       6.1 +/-    3.25  0.080 / 0.140
G32     209.6          30.2                5.4 +/-    2.79       9.4 +/-    2.79  0.110 / 0.090