PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-08:43:00
G10     290.9          49.3                3.8 +/-    2.95       4.9 +/-    2.95  0.050 / 0.100
G15     46.8           31.2                3.0 +/-    1.06       5.1 +/-    1.06  0.080 / 0.090
G20     54.5           43.5                4.0 +/-    1.06       5.5 +/-    1.06  0.040 / 0.040
G21     81.4           76.0                5.0 +/-    0.57       5.1 +/-    0.57  0.030 / 0.040
G24     102.4          24.7                7.2 +/-    1.52      14.1 +/-    1.52  0.090 / 0.120
G27     304.3          32.6                2.4 +/-    3.01       3.9 +/-    3.01  0.100 / 0.180
G29     168.4          11.4                4.4 +/-    1.71      11.8 +/-    1.71  0.040 / 0.060
G32     208.7          29.2                5.3 +/-    1.31       9.5 +/-    1.31  0.040 / 0.060