PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/19-11:27:30
G02     35.3           52.8                5.3 +/-    1.07       6.5 +/-    1.07  0.030 / 0.040
G05     144.4          61.8                7.4 +/-    0.57       8.3 +/-    0.57  0.030 / 0.030
G06     53.9           14.3                2.6 +/-    1.71       6.7 +/-    1.71  0.030 / 0.030
G12     190.1          64.8                5.8 +/-    0.69       6.3 +/-    0.69  0.030 / 0.030
G25     295.6          53.8                5.6 +/-    2.26       6.8 +/-    2.26  0.090 / 0.130
G29     307.2          27.7                4.3 +/-    1.93       7.9 +/-    1.93  0.060 / 0.120