PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-10:27:40
G02     8.9            71.8                5.3 +/-    0.69       5.6 +/-    0.69  0.040 / 0.080
G05     163.9          38.5                7.2 +/-    1.14      10.8 +/-    1.14  0.040 / 0.060
G06     43.3           33.1                2.6 +/-    0.69       4.3 +/-    0.69  0.030 / 0.030
G12     283.5          80.6                5.2 +/-    0.63       5.3 +/-    0.63  0.030 / 0.030
G19     81.9           20.8                5.7 +/-    1.09      12.2 +/-    1.09  0.040 / 0.050
G24     224.4          18.0                6.1 +/-    3.16      14.0 +/-    3.16  0.040 / 0.040
G25     315.2          35.0                4.5 +/-    2.03       7.2 +/-    2.03  0.080 / 0.160
G29     290.3          12.2                5.6 +/-    1.55      14.8 +/-    1.55  0.080 / 0.180