PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/10-08:27:50
G05     46.5           23.0                2.1 +/-    2.27       4.3 +/-    2.27  0.100 / 0.150
G13     88.4           36.2                6.1 +/-    1.17       9.4 +/-    1.17  0.100 / 0.190
G15     134.2          46.0                6.0 +/-    0.69       7.9 +/-    0.69  0.080 / 0.070
G20     347.0          80.2                3.5 +/-    0.43       3.5 +/-    0.43  0.070 / 0.060
G21     305.6          42.4                4.0 +/-    1.10       5.6 +/-    1.10  0.050 / 0.040
G25     204.9          18.5                5.4 +/-    2.19      12.4 +/-    2.19  0.040 / 0.040
G26     296.4          20.5                2.5 +/-    1.28       5.4 +/-    1.28  0.050 / 0.080
G29     141.1          81.6                4.9 +/-    0.50       5.0 +/-    0.50  0.050 / 0.080