PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-13:28:10
G02     216.4          55.9                6.1 +/-    0.76       7.2 +/-    0.76  0.050 / 0.080
G06     58.3           74.1                5.7 +/-    0.65       5.9 +/-    0.65  0.040 / 0.060
G12     319.0          38.0                2.9 +/-    0.69       4.3 +/-    0.69  0.080 / 0.090
G17     57.9           31.2                4.1 +/-    1.14       7.0 +/-    1.14  0.080 / 0.080
G19     33.2           52.8                4.1 +/-    0.44       5.0 +/-    0.44  0.030 / 0.030
G24     262.4          42.3                4.5 +/-    1.06       6.3 +/-    1.06  0.030 / 0.030
G28     121.9          15.0                5.9 +/-    1.71      14.7 +/-    1.71  0.040 / 0.050